Notable bridges and bridge systems.

Entity["Bridge",name] or

represents an entity of type "Bridge".

[prop]

gives the value of a specified property.

[{propi,}]

gives the value of a list of properties.

[Dated[prop,date]]

gives the value of a property associated with a particular date specification.

EntityClass["Bridge",{propispeci,}]

represents a class of entities with values of propi defined by speci.

Sample Entities

Sample Entity Classes

Properties

  • AdministrativeDivisionadministrative region
    AverageTrafficPerDayaverage traffic per day
    Builderbuilder
    Citiescities
    ClearanceBelowclearance below
    ClosingDateclosing date
    CollapseDatecollapse date
    ConstructionEndDatecompletion date
    ConstructionStartDateconstruction start date
    Coordinatescenter coordinates
    Countriescountries
    Crossesfeature crossed
    Designerdesigner
    DownstreamBridgedownstream bridge
    Imageimage
    Latitudelatitude
    Lengthlength
    LongestSpanlongest span
    Longitudelongitude
    Materialmaterial
    MaximumLoadmaximum load
    Namename
    OpeningDateopening date
    PiersInWaterpiers in water
    Positionposition
    Typetype
    UpstreamBridgeupstream bridge
    Widthwidth

Details

  • "Bridge" entities include a variety of structures that span both land and water features.
  • "Bridge" entity classes include bridge systems that encompass multiple distinct spans, each of which is represented by its own "Bridge" entity.
  • Some properties are available for the "Bridge" entity type as a whole and can be given using the form EntityValue["Bridge",property]. Such properties include:
  • "Properties"the list of available properties
    "PropertyCanonicalNames"the standard names of available properties
    "SampleEntities"a sample list of available entities (typically of length 10)
    "SampleEntityClasses"a sample list of available entity classes (typically of length 10)
    "EntityCount"number of entities available
    "Entities"the list of available entities
    "EntityCanonicalNames"the standard names of available entities
    "EntityClasses"the list of available entity classes
    "EntityClassCanonicalNames"the standard names of available entity classes
    "PropertyClasses"the list of available property classes
    "PropertyClassCanonicalNames"the standard names of available property classes
    "PropertyCount"number of properties available
  • The following annotations can be used in the third argument of EntityValue["Bridge",property,annotation]:
  • "Source"source information for the property
    "Date"the date associated with the entity-property value (if any)
    "EntityAssociation"an association of entities and entity-property values
    "PropertyAssociation"an association of properties and entity-property values
    "EntityPropertyAssociation"an association in which the specified entities are keys, and values are a nested association of properties and entity-property values
    "PropertyEntityAssociation"an association in which the specified properties are keys, and values are a nested association of entities and entity-property values
    "Dataset"a dataset in which the specified entities are keys, and values are an association of property names and entity-property values
  • The following annotations can be used in the second argument of EntityValue[property,annotation]:
  • "Qualifiers"the list of possible qualifiers for the property
    "QualifierValues"the list of possible values that can be given to each qualifier
    "DefaultQualifierValues"the list of default values for the property's qualifiers
    "Description"a brief textual description of the property
    "Definition"a detailed textual definition of the property
    "PhysicalQuantity"the physical quantity associated with the entity-property value
    "Unit"the unit associated with the entity-property value
  • A qualifier value of Automatic indicates that an applicable format of values can be used; e.g. for the "Date" qualifier, this includes a proper date or date span.

Examples

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Basic Examples  (4)

Use for entity discovery:

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Find a property value for an entity:

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Retrieve a dataset of all available properties for an entity:

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Find notable bridges longer than 20 miles:

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Scope  (1)

Relations to Other Entity Types  (1)